A/C Unit
could be a few things causing this. Possibly low A/C refrigerant, air inlet doors arent working or are stuck. Is the air hot as if the heater is on or just feel the same temprature as outside? give us some more details please and well try to help out.
Ok seems like a stuck vent door. see if you can pull any codes that will tell me if you got a stuck air vent door (which switches from hot to cold) also see if you can get an A/C guage and check the pressure of the system it should be around 35psi - 55psi max. let me know what you come up with. thanx
we need codes to provide help.
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what year of cadillac do you own? or is this a cadillac, i cant tell on your profile so this cant help me tell you how to pull the codes.
To enter diagnostic mode, proceed as follows:
To exit the diagnostic mode anytime during the test, depress the "ECON" or "DEFOG" button, or turn the ignition switch "OFF." Hope this helps let us know what you come up with.
- Turn ignition "ON." Engine can be either OFF or RUNNING. For cars equipped with the Digital Instrument Panel Display (Digital IPC):
- Simultaneously press the "OFF and "WARMER" (red) buttons on climate control center (CCC) until all display segments (IPC and CCP) are illuminated For cars equipped with the Analog Instrument Panel Display (Analog IPC):
- Simultaneously press on the Climate Control Panel (CCP) the "OFF" and "PASS WARMER" (up arrow) buttons.
- PCM DTC
- IPC DTC
- ACM DTC
- SDM DTC
- TCS DTC
- PZM DTC
- IRC DTC
- RFA DTC
- CCP DTC
- MSM DTC
- MMM DTC
- PHN DTC
To exit the diagnostic mode anytime during the test, depress the "ECON" or "DEFOG" button, or turn the ignition switch "OFF." Hope this helps let us know what you come up with.
Last edited by 92_Daddylac; Aug 26, 2009 at 08:21 PM.


